Machine for molding concrete or cementitious building-blocks.



PATENTED SEPT. 11, 1906.

'J. H. HENDRIGKSON.

MACHINE POE MOLDING CONCRETE 0R CEMENTITIOUS BUILDING BLOCKS.

APPLICATION FILED DEC. 3. 1904.

5 SHEETS-SHEET 1.

Q Q N. xmw

ma; L L

w w i E S E n 0 E N H W IIVVEAITOR JMWH. HWM

' ATTORNEYS n1: NORRIS PETERs cm, wlsumorcv, 04 c PATENTED SEPT. 11,1906.

J. H. HENDRICKSON.

MACHINE FOR MOLDING CONCRETE 0R GEMENTITIOUS BUILDING BLOCKS.

APPLICATION FILED DEC. 3. 1904.

5 SHEETSSHEET 2v mve/vror? d m H Hwm Br 7 M141 ATTORNEYS n; co..WASHINGTON. a c

PATENTED SEPT. 11, 1906.

J. H. HENDRICKSON. MACHINE FOR MOLDING CONCRETE 0R CEMENTITIOUS BUILDINGBLOCKS.

APPLICATION FILED DEO.3,1904.

6 SHEETS-SHEET 3,

WITNESSES:

" ii q dM wm/m/ mm ATTORNEYS RS co., WASHINGTON, n. cy

PATENTED SEPT. 11, 1906.

J. H. HENDRIGKSON. MACHINE FOR MOLDING CONCRETE 0 CEMENTITIOUS BUILDINGBLOCKS.

APPLICATION FILED DEC. 3. 1904.

6 SHEETSSHEET 4.

N ON MN 6 x w X 1: mm x mu W ms NoRms PETERS ca. WASHINGTON. u. c.

No. 830,899. I PATENTED SEPT. 11, 1906.

J. H. HENDRIOKSON.

MACHINE FOR MOLDING CONCRETE OR GEMENTITIOUS BUILDING BLOCKS.

APPLICATION TILED DEG.3,1904.

5 SHEETS-SHEET 5.

WITNESSES.-

I INVEN-TOI? F 1; a 27W ATTORNEY! r1: NORRIS PETERS cc" wAsumm-ou, u, c.

UNIED s rarns PATENT orrroni.

JOHN H. HENDRICKSON, OF CLEVELAND, OHIO, ASSIGNOR TO THE HYDRAULICPORTLAND ROCK COMPANY, OF CLEVELAND, OHIO,

A CORPORATION OF OHIO.

MACHINE FOR MOLDING CONCRETE 0R CEMENTITIOUS BUILDING-BLOCKS.

Specification of Letters Patent.

Patented Sept. 1 1, 1906.

Application filed December 3, 1904. Serial No. 235,379.

To aZZ whmn, it may concern:

Be it known that I, JOHN H. HENDRICK- SON, a citizen of the UnitedStates of America, residing at Cleveland, in the county of Cuyahoga andState of Ohio, have invented certain new and useful Improvements inMachines for Molding Concrete or Cementitious Building-Blocks; and Ihereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art towhichit pertains to make and use the same.

This invention relates to improvements in machines for molding concreteor cementitious building-blocks.

Ono object of this invention is to provide a block-molding machinewhereby the manu facture of hollow concrete or cementitiousbuildingblocks is facilitated.

Another object is to provide a block-molding machine which is simple anddurable in construction and reliable and efficient in its operation.

Another object is to provide a block-molding machine comprising a bed ortable, a mold adapted to rest upon the table and capable of beinglowered over and hoisted from the table and swung laterally, and a cranefor swinging the mold in a horizontalplane and provided with hoistingand lowering tackle with the mold rotatably supported from the saidtackle and capable of being turned down side up when the mold is removedor separated from the table to the required extent.

Another object is to form a hollow concrete or cementitiousbuilding-block face downward by and within a mold having its uprightwalls pivoted to the mold-bottom and capable of swinging outwardly tocover the mold by a pallet when the mold has been filled with theconcrete or cementitious material required to form the block; to hoistthe covered mold, when the block has been formed in the mold, from thebed or table supporting the mold during the formation of the block andthereupon swing the hoisted and covered mold from over the table, thento turn the mold down side up and bring the cover-forming palletemployed in covering the mold into a supporting position below the blockand then to open the mold by causing the upright walls of the mold toswing outwardly to free the block and permit the block to be removedwith the pallet to any convenient place.

Another object is to provide the ends of the block with recesses orcavities having the dimensions and arrangement required to accommodate aconvenient application of the hands of the workman employed in carryingand setting or laying the block in the building of a wall or structureof building-blocks.

Another object is to render the cores employed in the formation of theholes in the block adjustable laterally, vertically, andcircumferentially and to provide simple and efficient means for securingthe said cores in the desired adjustment.

With these objects in View and to the end of realizing other advantageshereinafter appearin'g'this invention consists in certain features ofconstruction and combinations of parts hereinafter described, andpointed out in the claims.

In the accompanying drawings, Figures 1 and 2 are elevations taken at aright angle to each other, partly in section, of a machine or apparatusembodying my invention. Fig. 3 s a top plan relative to Fig. 2, partlyin section. Fig. 4 is a vertical section on line 4 4, Fig. 2, looking inthe direction indicated by the arrow. Fig. 5 is a top plan, inhorizontal section, on line 5 5, Fig. 2. Fig. 6 is a vertical section online 6 6, Fig. 1, looking in the direction indicated by the arrow. Fig.7 is a side elevation, largely in section, illustrating the crane forswinging the mold in a horizontal plane and provided with means forhoisting and lowering the mold and shows the mold delivered down side uponto a truck.

My improved machine or apparatus is designed more especially for use inthe making of hollow building-blocks of cementitious material, and,referring to the drawings, A indicates the stationary framework,provided at the top with a horizontally-arranged bed or table a.

A' mold is shown removably seated upon the table a in Figs. 1, 2, 3, 4i,and 5, and the bottom I) of the chamber of the mold, as shown veryclearly in Figs. 2 and 4, rests upon the table a. The mold-bottom b andthe table a are provided with mutually-engaging projections and holes toprevent displacement of the mold-bottom'in a horizontal plane on thesaid table when the mold is placed in position upon the table. As shownin Fig. 2, the mold-bottom b is provided with depending pins orprojections 12, which ,engage holes 13, formed in the table a. The moldillustrated is rectangular in plan, and consequently designed for use inmaking a rectangular building-block, and the end Walls 14 and the sidewalls of the mold-that is, the upright walls of the chamber of themoldare hinged or pivotally attached at their lower ends to the bottomI) to render the said walls capable of being swung laterally andoutwardly. Preferably the upright moldwalls 14 and 15 abut in theirinwardly-swung and perpendicular or normal position against the edges ofthe mold-bottom b and are provided at their lower ends with dependingears or lugs 16, pivoted horizontally, as at 17, t0 ears or lugs 18,which are integral with and project outwardly and downwardly from the mod-bottom b, and the arrangement of the parts is such that the saidmold-walls 14 and 15 are capable of being swung laterally and outwardlyagainst stop-forming projections 20, formed upon the lugs 18 andarranged to limit the outward swinging of the said walls. The side walls15 of the mold are arranged, preferably, between the end walls 14 of themoldthat is, the end walls 14 preferably overlap the'adjacent ends ofthe side walls 15, as shown very clearly in Fig. 5, and are provided atthir inner sides with recesses 22, engaged by the ends of the side walls15.

The table a is slotted or cut away, as at 23, to accommodate thelocation of the ears or lugs 18 of the mold-bottom b and the pivotalconnection to the said lugs of the mold-walls 14 and 15, as shown inFigs. 2, 3, 4, and 5.

Hooks D are pivoted horizontally at the outer sides of and to the sidewalls 15 of the mold, as at d, and are arranged to overhang lugs- 24,with which the end walls 14 of the mold are provided, andv thereby holdthe said.

walls 14 in their inwardly-swung and perpendicular or normal position,and obviously the engagement of the hooks D with the lugs 24 and theengagement of'the ends of the moldwalls 15 with the recesses 22 in themoldwalls 14 are instrumental in effectually holding the mold-walls 14and 15 in their perpendicular or normal position.

The building-block made within the mold is formed with its face next themold-bottom l7, and consequently the said bottom has the configurationor design required to form the face of the block. It will be observed,therefore, that in charging the mold to make a building-block theface-forming material is first fed into the mold so as to form upon themold-bottom b a layer m of facing-forming material, (see Figs. 2 and 4,)whereupon the coarser material M employed in forming the body portion ofthe block is fed into the mold and compacted upon the facing-forminglayer ;*but before the material employed in forming the body portion ofthe block is fed into the mold cores C, adapted to form cavities,chambers, or holes it (see Fig. 3) in the block, are inserted in themold, which cores are shown only in Figs. 1, 3, and 6.

As the chambers or holes formed in a build ing-block should extendvertically through the block and as the mold of my improved machine orapparatus is arranged to form the block face side down, the cores 0 arearranged to pass into the mold horizontally between the upper and lowerends of the mold.

Each side wall 15 of the mold illustrated is provided (see Figs. 2, 3,and 5) with three lateral apertures or holes 25, suitably spacedlongitudinally of the mold and registering with the apertures or holes25 formed in the opposite side wall 15 of the mold, and three parallelcores 0 are arranged horizontally and at a right an le to the mold andin position to enter the di erent holes 25, respectively, in one of themold-walls 15 and penetrate the mold horizontally and pass intoengagement with the different apertures or holes 25, respectively, inthe other mold-wall 15. I

The cores C are borne by a head G, with WlllOll one end of ahorizontally-arranged endwise-mo vable rack g is provided, to which headthe said cores are secured, as will hereinafter appear. The rack g isarranged parallel with the cores C, with its teeth on top, and (seeFigs. 1 and 3) engages a correspondingly-arranged slideway 30, formed inthe outer end of an arm or bracket is, with which a vertically-movableslide K is provided. (See Figs. 1, 2, and 3.) The slide K engages acorrespondingly arranged slideway 32, with which the stationaryframework A is provided. Displacement of the slide K from the slideway32 is prevented in any approved manner. A verticallyarranged screw 6,which engages with the threads of and extends through a nut f, which isrigid with the said framework, extends into the slide K, and is attachedto the said slide in any wellknown manner to accommodate turning of thescrew in the slide. It is obvious, therefore, that the rack-bearing armor bracket k,

and consequently the rack g and connected cores 0, are simultaneouslyadjustable vertically to accommodate an accurate adjustment of all ofthe cores vertically relative to the holes 25 in the side walls 15 ofthe mold into which the said cores are to be inserted. The arm orbracket 7:: is provided at each side with a standard 33. The standards33 afford bearing to a shaft R, which 1s arranged horizontally above andtransversely of the travel of the rack g and operatively provided between the standards with a pinion 1*, which meshes with the said rack.The shaft R 'is operatively provided at each end with a shaft. 1

' The head G is provided, as shown in Figs. 1 and 6, with three parallelslots or recesses 35, open at the face of the said head, which recessesare suitably spaced apart vertically and extend longitudinally and fromend to end of the head. The recesses 35 are enlarged vertically, as at36, within the head G. The head G is arranged parallel with the mold,and consequently at a right angle to the cores 0. Each core C isprovided at the face of the head G with two flanges 37 and 37, arrangedat opposite sides, respectively, of the core and extending from top tobottom of the core, and bolts P extend through holes 38 in the saidflanges into one of the recesses 35 and are arranged with their headsengaging the enlarged portion 36 of the respective recess. As shown, thecentral recess 35 1s engaged by the bolts P, and nuts Q are mounted onthe shanks of the bolts and ar ranged to clamp the flanges 37 againstthe face of the head G, and thereby firmly but removably secure thecores C to the head. The bolt-holes 38 in the flanges 37 are elongatedvertically to accommodate a vertical adjustment of each core C uponloosening the nuts Q, employed in clamping the said core to the head Gindependently of the other cores.

It is obvious that the slots or recesses 35 in the head G accommodate areadjustment of the cores C laterally and that the bolts P and nuts Qare employed in securing the cores in the desired lateral adjustment. Itwill be observed also that the slots or recesses 35 and the verticalelongation of the bolt-holes 38 accommodate a readjustment of the corescircumferentially and that the bolts P and nuts Q constitute the meansfor securing the cores in the desired circumferential adjustment, aswell as in the desired lateral adjustment.

By the construction hereinbefore described it will be observed that thecores 0 can be nicely adjusted relative to the holes 25 in the sidewalls 15 of the mold.

The cores G illustrated taper somewhat toward their free ends to renderthem capable of being readily withdrawn from the building-block formedin the mold, and obviously the holes 25 in the mold-walls 15 should havethe dimensions or contour required to enable the cores to snugly fitthem when the cores are in position within the mold.

Means whereby the mold is capable of being swung in a horizontal planeand actuated vertically is provided, as will hereinafter appear; but ofcourse the cores C are removed from within a laden mold preparatory tothe removal of the laden mold from the table a. Preferably preparatoryto the removal of the laden mold from the table a the mold is closed ontop by a cover forming pallet a. (Shown resting in Figs. 1, 2, 3, and 4upon the upper ends of the upright walls 14 and 15 of the mold and helddownwardly upon the walls by suitably-applied spring-hooks w.) Each endwall 14 of the mold is provided at its outer side with a trunnion 40,which is arranged horizontally and in line end'wise with the trunnion ofthe other end wall of the mold, and the hooks 20 have bent ends 42arranged to engage the under sides of the trunnions 40, as shown in Fig.2, and the opposite ends 43 of the said hooks are bent to project overand bear downwardly upon the pallet a when the latter operates as acover.

The apparatus employed to swing the mold in a horizontal plane and tomove the mold vertically comprises a horizontally-swinging crane ac,supported from the framework A andarranged to overhang the mold. Thecrane 9c is provided with a winding-drum 45, arranged in suitableproximity to the framework A. The crane 9c is provided also withguide-sheaves 46, arranged between the drum 45 and the free end of themold-overhanging portion of the crane. The crane :1: is provided alsowith hoisting and lowering tackle which comprises a bar y, arranged overand longitudinally of the mold, which bar is provided at the top andcentrally between its ends with a guidesheave 50. A' cable 47 is fixedat one end, as at 48, to the free end of the mold-overhanging portion ofthe crane, thence leads to and in'under the sheave 50, thence to andover the sheaves 46, and thence into operative engagement with the drum45. Two hangers 52 and 52 depend from opposite ends, respectively, ofthe bar 1 and are pivoted horizontally, as at 53, to the said bar. Thetrunnions 40 of the mold have bearing in the different hangers 52 and52, respectively. The bearing-forming lower end of each hanger 52 ispreferably in the form of a hook 54, embracing the lower portion of theengaging trunnion and engages an annular recess 55, with which the saidtrunnion is provided. The mold is therefore rotatably supported from thehangers 52, and obviously the mold is hoisted or lowered according asthe drum 45 is actuated in the one direction or the other, and the moldwhen free to be swung laterally is actuated laterallyin the onedirection or the other, according as the crane it is swung laterally inthe one or the other direction. In Fig. 7 the crane 0c is shown swunglaterally to and over a truck 56, with the mold lowered onto the saidtruck and with the spring-hooks w removed.

Each end wall 14 of the mold, as shown in Figs. 3, 5, and 7 is providedat its inner side and centrally between theupper and lower ends of themold with a plate 57, removably secured by means of screws 58, as shownin Fig. 5, to the said wall. The said plate 57 extends horizontally andtransversely of the said wall from side edge to side edge of the walland is provided at its inner side with two inwardly-projecting parallelribs 60, which are arranged vertically and trans versely of the saidplate near opposite ends, respectively, of the plate. The plates 57 ofthe mold-walls 14 are instrumental in forming recesses 62, as shown inFig. 7, in the ends of the building-block formed by and within obviousthat the recesses 62 will extend from top to bottom of the block whenthe block is made a part of a wall or structure, and the said recesses62 and the cavities 63 conveniently accommodate the location of thehands of the workman in setting or laying the block.

In Fig. 3 and in solid lines, Fig. 1, the cores C are shown removed fromthe mold, whereas in dotted lines, Fig. 1, the said cores are shown inposition within the mold. A hollow building-block is shown formed withinthe mold in Figs. 2. 3, 4, 5, and 7. In Figs. 1, 2, 3, 4, and 5 theladen mold is shown in the same position upon the table a. In Fig. 7 themold is shown transferred from the table (1 onto the truck 56, and indotted lines, Fig. 7, the bar y is shown hoisted enough to permit theswinging of the upright walls 14 and 15 of the mold outwardly againstthe stop-forming members 20, and the end walls 14 are shown thus swungin dotted lines in the said figure, but of course the side walls 15swing outwardly with the end walls 14 to adequately release the blockwithin the mold and the end walls 14 swing outwardly far enough toremove the ribbed plates 57 from the said block. The axes of the pivotalconnections between the upright walls 14 and 15 of the mold and themold-bottom b are arranged far enough outwardly from a point centrallybetween the inner and outer sides of the said walls to cause the saidwalls to loosen by gravity when the mold is turned down side up and thesaid walls are free to be swung outwardly.

The operation of the apparatus hereinbefore described is as follows: Themold is placed upon the table a with the projections 12 of themold-bottom in engagement with the holes 13 in the said table, and theupright walls of the mold are secured in their inwardly-swung andperpendicular or normal position, as hereinbefore described, whereuponthe cores C are adjusted accurately relative to the apertures or holes25 in the side walls of the mold and then passed into their operativeposition within the mold. The mold is filled with the concrete-orcementitious material required to form the buildingblock to be molded,whereupon the mold .is covered by the application of the cover-formingpallet u, which is secured in its moldclosing position by theapplication of the springhooks to. Thereupon the winding-drum 45 of thecrane a: is rotated in the direction required to hoist the mold farenough to free the depending members of the mold-bottom from the tablea, whereupon the crane is swung to transfer the mold to and over thetruck 56, where the mold is turned down side up and then lowered ontothe said truck. The spring-hooks 'w are then removed and the hooks Drendered inoperative, whereupon by somewhat hoisting the bar y theupright Walls of' the mold will be swung outwardly to release thebuilding-block upon the pallet u and to remove the recess-forming plates57 of the end walls of the mold from the block. Thereupon the mold ishoisted clear of the block, which is then moved with the pallet u to anydesired place. The empty mold is then returned to the table a formolding another buildingblock, and another cover-forming pallet isprovided'for the said block. g

It will be observed that the mold is removable from the hangers 52 andthat the moldbottom I) is formed by a face-plate having its upper sideprovided with the desired con figuration or design and that the uprightwalls of my improved machine are pivoted to the mold-bottom-formingface-plate.

I would here remark that the plates 57 of I the end walls of the moldhave their longitudinal edges beveled to readily accommodate thewithdrawal of the said plates from the block formed in the mold. Iwouldremark,

furthermore, that the removability of the R cores 0 from the head G isimportant to ac commodate the substitution of cores of a different sizeor contour and that the vertical adjustability of the cores 0independently of each other is important to accommodate their use in theformation of holes out of line laterally or staggered.

What I claim is 1. In a machine for molding buildingblocks or artificialstone, a stationary framework comprising a table; a mold loosely mountedon the table and having its upright walls pivoted horizontally to thebottom of the mold so as to render the said walls .capable of swinginglaterally and outwardly, and means for holding the said walls in theirinwardly-swung and normal position, and the mold-bottom and the tablebeing provided with mutually-engaging holes and projections to preventhorizontal displacement of the mold upon the table.

2. In a machine for molding buildingblocks or artificial stone, asuitably-supported movable mold which has its upright walls pivotedhorizontally to the bottom of the mold so as to be capable of swinginglaterally and outwardly, which mold is provided ICC externally withtrunnions; bearings for the side of the trunnions and having members forengaging the upper side of the pallet or cover when the latter is in itsmold-covering position.

3. In a machine for molding buildingblocks or artificial stone, arotatably-supported mold which has laterally and outwardly swingableupright walls means for removably holding the said walls in theirinwardlyswung and normal position; means for limiting the outwardswinging of the walls; the cover-forming pallet for covering and therebyclosing the mold; means for holding the said pallet or cover in itsclosed'position during the turning of the mold down side up, and theaxes of the pivotal connections between the upright walls of the moldand the mold-bottom being arranged outwardly from a point centrallybetween the inner and outer sides of the said walls.

4. In a machine for molding buildingblocks, a mold rectangular in planand turnable down side up, which mold has its end walls pivoted to thebottom of the inold so as to render it capable of swinging laterally andoutwardly, which walls are each provided, at its inner side andcentrally between the top and bottom of the mold, with aninwardlyprojecting member, and means for holding the end walls of themold in their inwardlyswung and normal position, and means whereby thesaid walls, when the mold is turned down side up, are caused to swing,if free to swing, outwardly far enough to remove the aforesaidinwardly-proj ecting member of each end wall from between the sidewalls.

5. In a machine for molding buildingblocks, the combination, with ahorizontallyarranged endwise-movable rack provided at one end with ahead; means for actuating the rack; a core for forming a hole in thebuildingblock, which core is borne by the aforesaid head; stationaryframework provided with an upright slideway a slide engaging the saidslideway and provided with an arm or bracket bearing the aforesaid rack,and means for raising and lowering the slide.

6. In a building-block-molding machine, the combination of ahoriZontally-shiftable head provided in its face with a horizontal slotor recess open at the said face and enlarged vertically within the head;a horizontal core supported from the head and provided at the face ofthe head with laterallyprojecting flanges having bolt-holes in registrywith the aforesaid slot or recess; bolts extending through thebolt-holes into the slot or recess and arranged with their heads withinthe aforesaid enlarged portion of the slot or recess, and nuts mountedon the shanks of the bolts and arranged to clamp the aforesaid flangesagainst the head 7. In a machine for molding buildingblocks, thecombination of a head provided in its face with a horizontal slot orrecess open at the said face and enlarged vertically within the head; acore supported from the head and provided at the face of the head withlaterally-projecting flanges having boltholes in registry with the slotor recess; bolts extending through the bolt-holes into the slot orrecess and arranged with their heads within the aforesaid enlargedportion of the slot or recess, and nuts on the shanks of the bolts andarranged to clamp the afore said flanges against the head, and theboltholes being elongated vertically substantially as and for thepurpose set forth.

In testimony whereof I sign the foregoing specification in the presenceof two witnesses.

JOHN H. HENDRICKSON.

Witnesses:

O. H. DORER, B. 0. BROWN.

